Should I wait to pre-qualify for loan?

Question : Should I wait to pre-qualify for loan?

I am getting ready to begin applying for mortgages, possibly an FHA loan. As of yesterday, I paid about 1k towards credit cards to bring my balances on all cards below 10%. I believe I should not completely pay them off. Also, as of yesterday, I was told I will be getting a 5k raise at my job, which will probably begin end of this month. My question- Should I wait for the credit cards to report my latest balances and/or my new salary to show up on my report before filling out a prequalification form for a mortgage? My credit cards balances weren't really high before, Ill say just under 50%. Again, this is for prequalification, not pre-approval, so I guess the bank will recheck my credit later when the time comes. As for my salary, this is my first home, and I think Ill live well below my means, so if the increase in salary will only help with the loan amount, I can do without that. I am just so impatient and want to get this process started. Pls provide me you advice. Thanks!

kham83